Esempio di ControlTemplate del controllo NavigationWindow
Aggiornamento: novembre 2007
I controlli disponibili in Windows Presentation Foundation (WPF) includono un oggetto ControlTemplate che contiene la relativa struttura ad albero visuale. È possibile modificare la struttura e l'aspetto di un controllo modificando il relativo oggetto ControlTemplate. Non è possibile sostituire solo una parte della struttura ad albero visuale di un controllo. Per modificare la struttura ad albero visuale di un controllo, è necessario impostare la proprietà Template di tale controllo sul relativo oggetto ControlTemplate nuovo e completo.
In questo argomento viene illustrato l'oggetto ControlTemplate del controllo NavigationWindow di WPF.
Nel presente argomento sono contenute le seguenti sezioni.
- Prerequisiti
- Esempio di ControlTemplate del controllo NavigationWindow
- Argomenti correlati
Prerequisiti
Per eseguire gli esempi di questo argomento, è necessario disporre di conoscenze su come scrivere applicazioni WPF. Per ulteriori informazioni, vedere Guida introduttiva a Windows Presentation Foundation. È inoltre necessario comprendere l'utilizzo degli stili in WPF. Per ulteriori informazioni, vedere Applicazione di stili e modelli.
Esempio di ControlTemplate del controllo NavigationWindow
Anche se questo esempio contiene tutti gli elementi definiti nell'oggetto ControlTemplate di un controllo NavigationWindow per impostazione predefinita, i valori specifici devono essere considerati come esempi.
<Style x:Key="NavWinButtonStyle" TargetType="Button">
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="Command" Value="NavigationCommands.BrowseBack"/>
<Setter Property="Focusable" Value="false"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Grid>
<Ellipse
Name="Ellipse"
Fill="{StaticResource NormalBrush}"
Stroke="{StaticResource NormalBorderBrush}"
StrokeThickness="1"
Width="24"
Height="24"/>
<Path
x:Name="Arrow"
Margin="0,0,3,0"
Fill="{StaticResource GlyphBrush}"
HorizontalAlignment="Center"
VerticalAlignment="Center"
Data="M 6 0 L 0 6 L 6 12 Z"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="Command"
Value="{x:Static NavigationCommands.BrowseForward}">
<Setter TargetName="Arrow"
Property="Data" Value="M 0 0 L 6 6 L 0 12 z"/>
<Setter TargetName="Arrow"
Property="Margin" Value="3,0,0,0"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="Ellipse"
Property="Fill" Value="{StaticResource DarkBrush}"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter TargetName="Ellipse"
Property="Fill" Value="{StaticResource PressedBrush}" />
<Setter TargetName="Ellipse"
Property="Stroke" Value="{StaticResource PressedBorderBrush}" />
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter TargetName="Ellipse"
Property="Fill" Value="{StaticResource DisabledBackgroundBrush}"/>
<Setter TargetName="Arrow"
Property="Fill" Value="{StaticResource DisabledForegroundBrush}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<!-- NavWin Menu Style -->
<Style x:Key="NavWinMenu" TargetType="Menu">
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="KeyboardNavigation.TabNavigation" Value="None"/>
<Setter Property="IsMainMenu" Value="false"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Menu">
<DockPanel IsItemsHost="true"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<!-- NavWin Menu Header Style -->
<Style x:Key="NavWinHeaderMenuItem" TargetType="MenuItem">
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="MenuItem">
<Grid>
<Popup x:Name="PART_Popup"
Placement="Bottom"
VerticalOffset="2"
IsOpen="{TemplateBinding IsSubmenuOpen}"
AllowsTransparency="True"
Focusable="False"
PopupAnimation="Fade">
<Border Name="SubMenuBorder"
Background="{StaticResource WindowBackgroundBrush}"
BorderThickness="1"
BorderBrush="{StaticResource SolidBorderBrush}">
<StackPanel IsItemsHost="true"
Margin="2"
KeyboardNavigation.TabNavigation="Cycle"
KeyboardNavigation.DirectionalNavigation="Cycle"/>
</Border>
</Popup>
<Grid x:Name="Panel"
Width="24"
Background="Transparent"
HorizontalAlignment="Right" >
<Border Visibility="Hidden"
Name="HighlightBorder"
BorderThickness="1"
BorderBrush="{StaticResource NormalBorderBrush}"
Background="{StaticResource NormalBrush}"
CornerRadius="2" />
<Path x:Name="Arrow"
SnapsToDevicePixels="false"
HorizontalAlignment="Right"
VerticalAlignment="Center"
Margin="0,2,4,0"
Fill="{StaticResource GlyphBrush}"
StrokeLineJoin="Round"
Data="M 0 0 L 4 4 L 8 0 Z"/>
</Grid>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsHighlighted" Value="true">
<Setter TargetName="HighlightBorder" Property="Visibility" Value="Visible"/>
</Trigger>
<Trigger Property="IsSubmenuOpen" Value="true">
<Setter TargetName="HighlightBorder" Property="Background" Value="{StaticResource PressedBrush}" />
<Setter TargetName="HighlightBorder" Property="BorderBrush" Value="{StaticResource PressedBorderBrush}" />
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter TargetName="Arrow" Property="Fill" Value="{StaticResource DisabledForegroundBrush}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<!-- NavWin Menu Item Style -->
<Style x:Key="NavWinSubmenuItem" TargetType="MenuItem">
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="Header" Value="{Binding Path=(JournalEntry.Name)}"/>
<Setter Property="Command" Value="NavigationCommands.NavigateJournal"/>
<Setter Property="CommandTarget"
Value="{Binding RelativeSource={RelativeSource AncestorType={x:Type Menu}},
Path=TemplatedParent}"/>
<Setter Property="CommandParameter"
Value="{Binding RelativeSource={RelativeSource Self}}"/>
<Setter Property="JournalEntryUnifiedViewConverter.JournalEntryPosition"
Value="{Binding (JournalEntryUnifiedViewConverter.JournalEntryPosition)}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type MenuItem}">
<Grid Name="Panel"
Background="Transparent"
SnapsToDevicePixels="true">
<Path Name="Glyph"
SnapsToDevicePixels="false"
Margin="7,5"
Width="10"
Height="10"
HorizontalAlignment="Left"
StrokeStartLineCap="Triangle"
StrokeEndLineCap="Triangle"
StrokeThickness="2"
Stroke="{StaticResource GlyphBrush}" />
<ContentPresenter ContentSource="Header"
Margin="24,5,50,5"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Value="Current"
Property="JournalEntryUnifiedViewConverter.JournalEntryPosition" >
<Setter TargetName="Glyph" Property="Data"
Value="M 0,5 L 2.5,8 L 7,3 "/>
</Trigger>
<Trigger Property="IsHighlighted" Value="true">
<Setter TargetName="Panel" Property="Background"
Value="{StaticResource SelectedBackgroundBrush}"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="MenuItem.IsHighlighted"
Value="true"/>
<Condition Value="Forward"
Property="JournalEntryUnifiedViewConverter.JournalEntryPosition" />
</MultiTrigger.Conditions>
<Setter TargetName="Glyph" Property="Data"
Value="M 3 1 L 7 5 L 3 9 z"/>
<Setter TargetName="Glyph" Property="Fill"
Value="{StaticResource GlyphBrush}"/>
<Setter TargetName="Glyph" Property="Stroke"
Value="{x:Null}"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="MenuItem.IsHighlighted"
Value="true"/>
<Condition Value="Back"
Property="JournalEntryUnifiedViewConverter.JournalEntryPosition"/>
</MultiTrigger.Conditions>
<Setter TargetName="Glyph" Property="Data" Value="M 7 1 L 3 5 L 7 9 z"/>
<Setter TargetName="Glyph" Property="Fill" Value="{StaticResource GlyphBrush}"/>
<Setter TargetName="Glyph" Property="Stroke" Value="{x:Null}"/>
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<!-- Merges Back and Forward Navigation Stacks -->
<JournalEntryUnifiedViewConverter x:Key="JournalEntryUnifiedViewConverter"/>
<!-- SimpleStyles: NavigationWindow -->
<Style x:Key="{x:Type NavigationWindow}" TargetType="NavigationWindow">
<Setter Property="SnapsToDevicePixels" Value="true"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="NavigationWindow">
<DockPanel Background="{StaticResource WindowBackgroundBrush}">
<Grid Background="{StaticResource LightBrush}"
DockPanel.Dock="Top"
Height="30">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="16"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Menu Name="NavMenu"
Grid.ColumnSpan="3"
Height="20"
Margin="1,0,0,0"
VerticalAlignment="Center"
Style="{StaticResource NavWinMenu}">
<MenuItem Style="{StaticResource NavWinHeaderMenuItem}"
ItemContainerStyle="{StaticResource NavWinSubmenuItem}"
IsSubmenuOpen="{Binding Path=(MenuItem.IsSubmenuOpen),
Mode=TwoWay,RelativeSource={RelativeSource TemplatedParent}}">
<MenuItem.ItemsSource>
<MultiBinding Converter="{StaticResource JournalEntryUnifiedViewConverter}">
<MultiBinding.Bindings>
<Binding RelativeSource="{RelativeSource TemplatedParent}"
Path="BackStack" />
<Binding RelativeSource="{RelativeSource TemplatedParent}"
Path="ForwardStack" />
</MultiBinding.Bindings>
</MultiBinding>
</MenuItem.ItemsSource>
</MenuItem>
</Menu>
<Path Grid.Column="0"
SnapsToDevicePixels="false"
IsHitTestVisible="false"
Margin="2,0,0,0"
Grid.ColumnSpan="3"
StrokeThickness="1"
HorizontalAlignment="Left"
VerticalAlignment="Center"
Data="M22.5767,21.035 Q27,19.37 31.424,21.035 A12.5,12.5,0,0,0,53.5,13 A12.5,12.5,0,0,0,37.765,0.926 Q27,4.93 16.235,0.926 A12.5,12.5,0,0,0,0.5,13 A12.5,12.5,0,0,0,22.5767,21.035 z"
Fill="{StaticResource PressedBrush}"
Stroke="{StaticResource LightBorderBrush}"/>
<Button Style="{StaticResource NavWinButtonStyle}"
Command="NavigationCommands.BrowseBack"
Content="M 4 0 L 0 4 L 4 8 Z"
Margin="3,0,2,0"
Grid.Column="0"/>
<Button Style="{StaticResource NavWinButtonStyle}"
Command="NavigationCommands.BrowseForward"
Content="M 4 0 L 0 4 L 4 8 Z"
Margin="2,0,0,0"
Grid.Column="1"/>
</Grid>
<Grid>
<AdornerDecorator>
<ContentPresenter Name="PART_NavWinCP"
ClipToBounds="true"/>
</AdornerDecorator>
<ResizeGrip x:Name="WindowResizeGrip"
HorizontalAlignment="Right"
VerticalAlignment="Bottom"
Visibility="Collapsed"
IsTabStop="false"/>
</Grid>
</DockPanel>
<ControlTemplate.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="CanGoForward" Value="false"/>
<Condition Property="CanGoBack" Value="false"/>
</MultiTrigger.Conditions>
<Setter TargetName="NavMenu" Property="IsEnabled" Value="false"/>
</MultiTrigger>
<Trigger Property="ResizeMode" Value="CanResizeWithGrip">
<Setter TargetName="WindowResizeGrip" Property="Visibility" Value="Visible"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Nell'esempio precedente vengono utilizzate le risorse seguenti.
<Style x:Key="{x:Type ResizeGrip}" TargetType="{x:Type ResizeGrip}">
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ResizeGrip}">
<Border Background="Transparent"
SnapsToDevicePixels="True"
Width="16"
Height="16">
<Rectangle Margin="2">
<Rectangle.Fill>
<DrawingBrush Viewport="0,0,4,4"
ViewportUnits="Absolute"
Viewbox="0,0,8,8"
ViewboxUnits="Absolute"
TileMode="Tile">
<DrawingBrush.Drawing>
<DrawingGroup>
<DrawingGroup.Children>
<GeometryDrawing Brush="#AAA"
Geometry="M 4 4 L 4 8 L 8 8 L 8 4 z"/>
</DrawingGroup.Children>
</DrawingGroup>
</DrawingBrush.Drawing>
</DrawingBrush>
</Rectangle.Fill>
</Rectangle>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
...
<!-- Fill Brushes -->
<LinearGradientBrush x:Key="NormalBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#FFF" Offset="0.0"/>
<GradientStop Color="#CCC" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<LinearGradientBrush x:Key="HorizontalNormalBrush" StartPoint="0,0" EndPoint="1,0">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#FFF" Offset="0.0"/>
<GradientStop Color="#CCC" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<LinearGradientBrush x:Key="LightBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#FFF" Offset="0.0"/>
<GradientStop Color="#EEE" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<LinearGradientBrush x:Key="HorizontalLightBrush" StartPoint="0,0" EndPoint="1,0">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#FFF" Offset="0.0"/>
<GradientStop Color="#EEE" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<LinearGradientBrush x:Key="DarkBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#FFF" Offset="0.0"/>
<GradientStop Color="#AAA" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<LinearGradientBrush x:Key="PressedBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#BBB" Offset="0.0"/>
<GradientStop Color="#EEE" Offset="0.1"/>
<GradientStop Color="#EEE" Offset="0.9"/>
<GradientStop Color="#FFF" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<SolidColorBrush x:Key="DisabledForegroundBrush" Color="#888" />
<SolidColorBrush x:Key="DisabledBackgroundBrush" Color="#EEE" />
<SolidColorBrush x:Key="WindowBackgroundBrush" Color="#FFF" />
<SolidColorBrush x:Key="SelectedBackgroundBrush" Color="#DDD" />
<!-- Border Brushes -->
<LinearGradientBrush x:Key="NormalBorderBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#CCC" Offset="0.0"/>
<GradientStop Color="#444" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<LinearGradientBrush x:Key="HorizontalNormalBorderBrush" StartPoint="0,0" EndPoint="1,0">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#CCC" Offset="0.0"/>
<GradientStop Color="#444" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<LinearGradientBrush x:Key="DefaultedBorderBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#777" Offset="0.0"/>
<GradientStop Color="#000" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<LinearGradientBrush x:Key="PressedBorderBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#444" Offset="0.0"/>
<GradientStop Color="#888" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<SolidColorBrush x:Key="DisabledBorderBrush" Color="#AAA" />
<SolidColorBrush x:Key="SolidBorderBrush" Color="#888" />
<SolidColorBrush x:Key="LightBorderBrush" Color="#AAA" />
<!-- Miscellaneous Brushes -->
<SolidColorBrush x:Key="GlyphBrush" Color="#444" />
<SolidColorBrush x:Key="LightColorBrush" Color="#DDD" />
Per l'esempio completo, vedere Esempio di applicazione di stili con ControlTemplate.
Vedere anche
Concetti
Esempio di ControlTemplate del controllo NavigationWindow
Linee guida per la progettazione di controlli a cui è possibile applicare degli stili